baber/WOPTO huggingface dataset:
Patent GB-1513310-A (GB)
Title: Organopolysiloxanes
IPC: C08G77/06
Filed: 1975-08-07
Abstract: 1513310 Organopolysiloxanes; polycarbonate compositions GENERAL ELECTRIC CO 7 Aug 1975 [16 Sept 1974] 32986/75 Headings C3T and C3R A phenyl-containing organopolysiloxane fluid of the general formula wherein Ph is phenyl, R is hydrogen, trimethylsilyl or a mixture thereof, and wherein x and y have a combined value sufficient to provide a phenyl content of from 7-80 weight per cent is made by the solvent hydrolysis of diphenyldichlorosilane and dimethyldichlorosilane generally in a weight ratio of from 1À5 : 1 to 4 : 1. Suitable solvents are benzene, toluene, xylene, esters and ethers. The mixture of organochloro silanes in an organic solvent is mixed with and agitated in preheated water. The resulting organic layer is separated from the aqueous layer and water removed azeotropically therefrom. The resulting hydrolyzate is saturated with anhydrous ammonia and trimethylchlorosilane added thereto generally in an amount of 9À5-25À5 wt. per cent based on the weight of the hydrolyzate. The resulting organic layer is separated and the water and solvent stripped therefrom to yield an organopolysiloxane fluid (A) of the above formula wherein R is a mixture of H and trimethylsilyl. A fluid in which R is substantially all trimethylsilyl may be obtained by employing a sufficient amount of trimethylchlorosilane in the above hydrolysis reaction. The resulting all trimethylsiloxy-chain stopped fluid may then be equilibrated in the presence of KOH and optionally with the addition of further trimethylsiloxy chain-stopping units. The resulting fluid has a phenyl content of 40-80 wt. per cent and is one wherein x = 3-10 and y = 3-10 in the above formula. Alternatively the above equilibration may be carried out with the addition of octamethylcyclotetrasiloxane and trimethylsiloxy containing units provided by, e.g. linear decamethyltetrasiloxane, resulting in a fluid of viscosity 100-200 cS at 25‹ C. and a phenyl content of 30-48 wt. per cent. In another embodiment organopolysiloxane fluid (A) above is modified by adding thereto octamethylcyclotetrasiloxane in an amount sufficient to lower the phenyl content to 30% wt. and then equilibrating. The organopolysiloxane fluids preferably those in which R is a mixture of hydrogen and trimethylsilyl, the phenyl content is 40-80 wt. per cent and the trimethylsiloxy unit content is 12-21 wt. per cent can be added as mould release agents to polycarbonates generally in an amount of from 0À01 to 2À0 wt. per cent based on the polycarbonate. The preferably polycarbonate is the reaction product of phosgene and 2,2-bis(4-hydroxyphenyl)propane. Other uses of the fluid include mechanical and hydraulic fluids; high temperature grease components and transparent and controlled density greases.
Patent GB-1474371-A (GB)
Title: Copolymerization process
IPC: C08G18/04
Filed: 1973-07-11
Abstract: 1474371 Laminates SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 9 July 1974 [11 July 1973] 33041/73 Heading B5N [Also in Division C3] Laminates are obtained by impregnating at ambient temperature layers of plain-weave electrical glass cloth having an epoxy silane finish with a hard cure resin composition consisting of a commercial polyisocyanate, styrene, 2,4,6 - tris(dimethylaminomethyl)phenol as catalyst, a polyglycidyl ether of 2,2-bis(4- hydroxyphenyl)propane as co-catalyst and benzoyl chloride as pot-life improver. The laminate was then cured at ambient temperature for 16 hours and at 200 C. for 3 hours. The laminate obtained may be used in making electrical copper-clad board.
Patent GB-491490-A (GB)
Title: Improvements in or relating to impedance networks for coupling electric cable circuits
IPC: H01F19/06
Filed: 1936-12-02
Abstract: 491,490. Signalling over power circuits. BLUMLEIN, A. D. Dec. 2, 1936, No. 33081. [Class 40 (iv)] [Also in Groups XL and XXXV] Direct-current and low-frequency disturbances of high voltage are eliminated, and signals covering a wide frequency-range are uniformly transmitted, by a coupling network which comprises a transformer T and capacitive bridge connections 10, 11, 12, which, together with the leakage inductance and inherent resistance of the transformer, constitute a constant resistance path. The working range of frequencies may extend from 50 c. /sec. to 2 mc./sec. The arrangement shown in Fig. 3, includes also a choke 15 which comprises a pair of superposed single-layer coils on a core composed of thin laminations of highresistance magnetic alloy, the windings being so connected as to be non-inductive for loop currents while they attenuate phantom currents. The spacing and insulation are such that the impedance of the choke 15 is matched to that of the sections 29, 30 and of the line, and the output termination includes a matching resistance 28. The sections 29, 30 included in the coupling are attenuation-equalizing sections of the kind described in Specification 476,799, [Group XL], and are matched to the cable connected at I; the coupling T. 9, 10, 11, 12 is completed by shunt impedances 13, 14 to form an equivalent attenuation-equalizer. The sections 29, 30 are calculated to prevent resonance between the core 15 and condensers 11, 12, which would favour phantom disturbances. The transformer T has a 1:1 ratio and sufficient turns to transmit the lower frequencies of the working range. The impedances 9, 10, 11, 12 are so dimensioned in relation to the resistance and leakage inductance of the transformer that the impedance of the byepass channel is equal to a constant resistance, and the network is matched to the cable connected at 1. Simpler networks of balanced and unbalanced forms respectively, and without condensers 12 and the equalizer sections, are described with reference to Figs. 1 and 2 (not shown) ; and the resistance in series with the capacity may be omitted. When a step-up transformer is used, the bridging arm 10, 11, is connected from the end of the primary to a point 24 on the secondary such that the number of turns below the connection is equal to the number of turns on the primary.
Patent GB-1083809-A (GB)
Title: Improvements in or relating to the forming of articles from cement and fiber
IPC: C04B28/02
Filed: 1965-08-03
Abstract: Articles are formed from initially dry particulate cement and fibre materials by a process comprising the steps of tumbling the materials together in a mixing zone whilst spraying water into said zone, the materials dropping freely through the air so that the individual particles thereof become coated with water; compressing and shaping the resulting non-cohesive particulate mass; and curing the shaped mass.  The mixing zone may be a conventional cement mixer.  The cement material may be Portland cement, or a mixture thereof with silica flour, diatomite, clay, talc or volcanic ash.  The fibre material is preferably asbestos, but may also be one or more of glass, synthetic plastic, hemp, bagasse, coconut or bamboo.  The water may contain dissolved solids, e.g. sodium silicate or calcium chloride.
Patent GB-1511678-A (GB)
Title: Process for dyeing acid-modified dry-spun aromatic polyamides
IPC: D01F6/60
Filed: 1975-08-08
Abstract: 1511678 Dyeing dry-spun acid modified aromatic polyamides BAYER AG 8 Aug 1975 [10 Aug 1974] 33156/75 Heading D1B Dry-spun filaments of acid modified fully aromatic polyamides or copolyamides, optionally containing heterocyclic groups, are dyed by passing, before, during or after stretching, through an aqueous bath containing a cationic water-soluble dye. The aqueous dyebath preferably contains 0.01 to 5% of dissolved dye and the dyebath temperature is 20-100‹C; the dyebath may also contain 1-40% of a polar organic solvent, particularly dimethyl formamide, dimetyl acetamide, N-methyl-pyrrolidone or hexamethyl phosphoric acid tris-amide, Polyamides preferred are poly-m-phenylene isophthalamide or the heterocyclic polymer derived from isophthalic dichloride and 3-(paminophenyl)-7-amino-2, 4-(1-H, 3H)-quinazolinedione. The content of acid groups is preferably 50 to 500 m Vol per kg, particularly derived from a comonomer containing sulphonate or disulphimide groups.
Patent GB-665258-A (GB)
Title: Improvements relating to the desulphurization of iron and iron alloys
IPC: C21C1/02
Filed: 1949-12-29
Abstract: Iron and iron alloys are disulphurized, at a temperature not exceeding 140 DEG C. in a molten condition by the addition of a solid granular desulphurizing agent taken from the group consisting of the alkaline earth oxides and magnesium oxide, the treatment taking place with vigorous stirring but no addition of extraneous heat, and in a non-oxidizing atmosphere.  Small amounts of Al, Mg or calcium carbide added to the desulphurizing agent or small amounts of alkali compounds such as soda are stated to improve the efficiency of the reaction.  Pulverized carbonaceous material added helps to prevent the agent sintering.  The iron may be brought to the initial temperature by blowing in oxygen before the process is started.  A rotary reaction chamber is described and illustrated.  Specification 516,684 and U.S.A.  Specification 2,258,850 are referred to.
Patent GB-1011981-A (GB)
Title: Ionic hydrocarbon polymers
IPC: C08K5/098
Filed: 1962-08-30
Abstract: A cross-linked copolymer, the cross links of which are removable on fusion of the copolymer and restored on its reversion to the solid state, is obtained by neutralizing at least 10% of the carboxylic acid groups of a copolymer having a melt index of 0.1 to 100 g./10 minutes, formed by the direct copolymerization of ethylene and an alpha-beta ethylenically-unsaturated carboxylic acid having one or two carboxylic acid groups, the ethylene content in said copolymer being at least 50 mol. per cent and the acid monomer content being from 0.2 to 25 mol. per cent, with one or more ionic metal compounds, the metal ion therein having a valence of 1 to 3 when the acid is monocarboxylic, and a valence of 1 when the acid is dicarboxylic. The copolymer may be a terpolymer, e.g. with vinyl acetate.  The metal ions are preferably those of the metals of Groups I, II, III, IVa and VIII of the Periodic Table and may be used as the acetate, formate, hydroxide or methoxide.
Patent GB-622294-A (GB)
Title: Improvements in apparatus for raising liquids from great depths
IPC: F04F1/06
Filed: 1946-11-09
Abstract: 622,294. Raising liquids from wells. ROSA, E. da S. Nov. 9, 1946, No. 33342. Convention date, Nov. 15, 1945. [Classes 102(i) and 102(ii)] A positive-displacement pump B is connected by a valve I to two pipes 9, 10 that lead to a nozzle 20 immersed in a liquid. In the position of the valve shown, air is drawn through opening 7 and delivered to both pipes to force the liquid out of the system through the nozzle 20. The valve is then moved to a position to connect pipe 10 to the opening 7 and pipe 9 to the pump section, whereby liquid is drawn up pipe 9 and air is mixed with it in the chamber 21, the proportion depending on the pump suction.
Patent GB-482709-A (GB)
Title: Improvements in and relating to display devices
IPC: G09F7/08
Filed: 1936-10-02
Abstract: 482,709. Signs. BIOLITE, Inc. Oct. 2, 1936, No. 33416/37. Convention date, Oct. 3, 1935. Divided out of 476,167 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 1, 1936. [Class 3 (ii)] In a sign comprising a casing having a translucent display panel and a source of illumination within the casing, the upper edge of the panel is held between the side walls of a channel member which is detachably secured to the casing at either end, and display characters are carried on the rear side wall of the channel member. In the embodiment shown in the Figure, a display panel 11 and a diffusing sheet 9 are held by a spring 18 within a channel member 13 detachably secured to the casing 1, and the characters 14 in the form of tubes as described in Specification 476,167 are supported by clips 17 slidable in a channel member 15 secured to the member 13. The end walls and bottom of the casing have inturned and upturned flanges against which the panel 11 rests.
Patent GB-1411350-A (GB)
Title: Substituted indole compound process for the preparation and therapeutic compositions containing it
IPC: C07D209/28
Filed: 1973-07-13
Abstract: 1411350 Indole derivatives TROPON GmbH [trading as TROPONWERKE DINKLAGE & CO] 13 July 1973 [14 July 1972] 33435/73 Heading C2C The invention comprises [1-(p-chlorobenzoyl)- 5 - methoxy - 2 - methyl - 3 - indole] - acetoxyacetic acid and its salts with pharmacologically acceptable bases. The free acid is obtained by hydrogenating the benzyl ester. The salts are prepared by reacting the free acid with a base. The compounds are used as antiphlogistics.
Patent GB-1320924-A (GB)
Title: Semiconductor device with thermally conductive dielectric barrier
IPC: H01L23/433
Filed: 1970-07-09
Abstract: 1320924 Semi-conductor devices GENERAL ELECTRIC CO 9 July 1970 [22 July 1969] 33466/70 Heading H1K Heat is transmitted from a semi-conductor device to a heat sink by an electrically insulating member comprising a unitary layer of aluminium nitride (AlN). As shown, Fig. 1, a diode chip 102 is soldered between two contacts 114, 130 having leads 116, 134 respectively. The edge of the wafer is passivated by a glass layer 138 and the lower contact 114 is soldered to one face of an AlN plate 118 to the opposite face of which is soldered a heat sink 120 having a mounting tab 126. The diode is provided with an encapsulation 140 of silicone, epoxy or phenolic resin. In a second embodiment, Fig. 2 (not shown), a thyristor (202) having a bevelled edge is mounted inside a pot shaped casing (204) forming one electrode provided with an insulating cover (222) through which two further electrodes (214, 218) extend. The casing is electrically insulated from a threaded mounting stud (224, 228) by means of a plate (230) of AlN. Other semi-conductor devices may be used in either type housing, transistors and triacs being mentioned, and other types of housing may be utilized. The AlN plate may be of hot pressed single phase powder but is preferably monocrystalline and is provided with surface layers of Cr, W, or Mo covered with Ni, which is covered with Ag by vacuum evaporation so that it can be secured to other parts using a Pb-Sn, Pb-Sn-In, Pb-Sn-Ag or Pb-Sb solder. The electrical contacts to the semi-conductor device  may comprise similar structures or may be secured by thermocompression bonding.
Patent GB-185688-A (GB)
Title: Improvements in floor polishers or cleaners
IPC: A47L13/28
Filed: 1921-12-13
Abstract: 185,688. Titterington, J. B. Dec. 13, 1921. Pivoted handles.-A floor-cleaning device is pivotally and reversibly attached to a forked member 18 secured to a handle 17 and having the ends preferably curved inwardly, as shown, to permit clearance of the edges of the cleaning fabrics.
Patent GB-650111-A (GB)
Title: Method of cutting bevel gears with curved teeth
IPC: B23F9/10
Filed: 1947-12-19
Abstract: 650,111. Toothed wheels. FIAT SOC. PER AZIONI, and CIALLIE, A. Dec. 19, 1947, No. 33584. Convention date, Feb. 11, 1943. [Class 80(i)] [Also in Group XXII] Bevel gear tooth flanks are formed with a plurality of juxtaposed curves HI, IL, LM by a face cutter (see Group XXII). The concave flank may be formed with a single curve. Bearing is thus localized on the portion IL. The Specification as open to inspection under Sect. 91 also describes spur and rack teeth similarly formed. This subject-matter does not appear in the Specification as accepted.
Patent GB-1509060-A (GB)
Title: Refillable liquefied gas cartridge
IPC: F17C13/04
Filed: 1975-08-12
Abstract: 1509060 Pipe couplings; valves WEEKEND EQUIPMENT Ltd 12 Aug 1975 [14 Aug 1974] 33613/75 Headings F2G and F2V [Also in Division F4] Refilling of a cartridge 1 with liquefied gas is discontinued when the level of liquefied gas in the cartridge reaches a predetermined level, a float being used to move a lever to a position where it permits a valve member to move against its seat to close the respective valve and hence communication between a reservoir 58 and the cartridge 1. The cartridge has an inwardly curved base 3 with a connector 7 therein which includes a plug 9 threadedly engaging a plug 50 on reservoir 58. Plug 50 has a ball valve 51, 52, 53, 54 which is closed when connector 7 is not joined therewith, and plug 9 has a valve therein comprising a valve stem 26 with a head 29 urged against a ring seat 25 by a spring 27 acting between ring 25 and a washer 28 on stem 26. This latter valve is also closed when plugs 50 and 9 are disconnected. A valve 33, 34, 35, 36, 37 similar to the last-mentioned valve has its stem 34 engaged by a lever 43 having one arm 43b provided with a weighted float 45 such that, in the upright position of connector 7 shown in Fig. 1, the other arm 43a is moved away from stem 34 to permit head 35 to close the valve. Upon threaded engagement of plugs 9 and 50, a push rod 18 pushes ball 52 and stem head 29 off their respective seats 54, 25. The interior of the reservoir is now in communication with the tube 30 housing the lever operated valve via bores 21, 20, 22 in push rod 18 and the orifice opened between stem 26 and ring 25. If the reservoir and cartridge are now inverted to the Fig. 4 position, the weighted float 45 will cause arm 43a to bias stem 34 against the spring 36 and thus remove head 35 from its seat. Filling of the cartidge 1 in the Fig. 4 position thus proceeds until the level of liquefied gas lifts the float 45 thus moving arm 43a away from stem 34 to permit the associated valve to close and filling to cease.
Patent GB-480467-A (GB)
Title: Improvements in and connected with independent spring suspension for motor road vehicles
IPC: B60G3/01
Filed: 1936-12-08
Abstract: 480,467. Spring - suspensions for vehicles. LYONS, J. M. Dec. 8, 1936 No. 33695. [Class 108 (ii)] In an independent spring-suspension for road-vehicle wheels guide rods 5 are secured to lower lugs 6 and pass through upper lugs 9 on a frame 7 attached to the stub axle and other lugs 3, 4 on a frame 13 carrying the wheel are slidable on the rods against the pressure of springs 10. As shown an H -shaped bracket 7 is provided with lugs 11a which may be attached to an axle 8 by a king-pin 11 and is connected to a steering rod by a lug 11b, and with lateral projections 9 bored to receive the fixed rods 5 on which slide the lugs 3, 4 attached to the frame 13 fixed to the brake drum 2 and provided with a stub axle 13a. Springs 10 are mounted on the rods between a lug 4 and projection 9 so that the wheel may move upwardly only relatively to the axle 8 against the compression of the springs. Rubber pads 16 absorb the return shock. The springs may be enclosed in telescopic tubes and dashpots may be used with or without the springs. The axle may be supported on the usual springs.
Patent GB-1007539-A (GB)
Title: Improvements in or relating to screw conveyors
Inventor: CHESTER ALBERT EDWARD
IPC: B65G65/46
Filed: 1960-09-30
Abstract: 1,007,539. Screw conveyers; hoppers. INTERNATIONAL COMBUSTION (HOLDINGS) Ltd. Dec. 19, 1961 [Sept. 30, 1960], No. 33731/60. Headings B8A and B8S. A feed worm 18 acts as an agitator and also feeds material towards the free end of a screw conveyer 2. As shown, there are two feed worms 18, the axis of each of which is inclined, both to its own drive axis, and the axis of the conveyer 2. The depth of the screw thread of the conveyer 2 adjacent an input port 19 may be reduced to provide a degree of metering of the flow. In a modification, the feed worm may comprise a continuation of the screw of the conveyer 2. There is a bend in the screw at the junction between the feed worm and conveyer sections.
Patent GB-949915-A (GB)
Title: High speed cloth laying machine
IPC: A41H43/00
Filed: 1962-09-04
Abstract: 949,915. Feeding webs. CUTTING ROOM APPLIANCES CORPORATION. Sept. 4, 1962 [Nov. 20, 1961], No. 33777/62. Heading B6B. [Also in Division D1] In a cloth-laying machine cloth is unwound from roll 41 and passes around roller 126, Fig. 1, on its way to the laying means. The roller 126 actuates, through lever 123 and wedge-shaped cam member 116, calliper-type brake shoes 108, 109 operating on the spindle 39 of the cloth roll 41, in accordance with the amount of cloth in the loop between the roll 41 and roller 43. The roll of cloth can be moved transversely for alignment of the edge by means shown in Fig. 3. The spindle 39 has a groove 92 which is engaged by a roller 91 mounted for slidable motion within brackets 93 on shaft 94. A chain 97 engages the brackets 93 and transmits motion from a gear 100 on a manually-operated shaft 101.
Patent GB-1020740-A (GB)
Title: Improvements in or relating to process for bonding a polyolefin to metal
IPC: C08F8/46
Filed: 1964-08-18
Abstract: An article comprises a metal base, a bonding layer of maleic anhydride-modified polypropylene, and a top layer of a crystalline polyolefin.  The base may be of aluminium, copper, steel, galvanized steel or tinplate, and may be a rigid sheet or a foil; it may be pre-treated by sand-blasting or phosphate or chromate treatment. Both plastics layers may be applied by coating processes such as airless spraying, flame spraying, electrostatic spraying or immersion in solutions or fluidized beds, followed by baking; alternatively, the top coat or both plastics coats may comprise pre-formed sheets which are laminated to the base by heat and pressure.  The crystalline polyolefine may be polyethylene, polypropylene, a copolymer of ethylene and propylene, or a copolymer of either ethylene or propylene with another 1-olefine, such as 1-butene.  The bonding layer may be the reaction product of maleic anhydride with polypropylene or a copolymer of propylene with ethylene or with ethylene plus other unsaturated hydrocarbons; in one example a maleic anhydride modified terpolymer of propylene, ethylene, and dicyclopentadiene is used.
Patent GB-1208485-A (GB)
Title: Improvements in or relating to toy track games
IPC: A63H19/32
Filed: 1968-07-16
Abstract: 1,208,485. Self-propelled toy vehicle on track game. M. I. GLASS [trading as, MARVIN GLASS & ASSOCIATES]. 16 July, 1968 [20 July, 1967], No. 33784/68. Headings A6H and A6S.  A self-propelled toy vehicle, 20, runs along one of four non-concentric vehicle tracks 12, 14, 16, 18, which have parallel portions adjacent to one another and which include bridge-like structures 26, 27, 28, 29 adapted to laterally shift the toy vehicle from one track portion to an adjoining parallel portion of track, said vehicle including means for providing a signal contemporaneous with the stopping of the vehicle. Each player is assigned one track and controls one bridge-like structure by means of a handle such as 160 and endeavours to prevent the vehicle stopping on his track by transferring it to another track or by sending it along a track such as 184 towards the centre of the board where it strikes a bumper 190 and thus alters its direction of travel. The vehicle may be powered by a spring wound motor (details Fig. 5 and 6 not shown) which is connected through gearing with a pair of drive wheels adapted to straddle said track, said gearing includes a governor device to provide an essentially constant speed for the vehicle, and includes means to halt said motor and drive wheels after a predetermined period of operation of said motor.
Patent GB-431053-A (GB)
Title: Trolley pole current collectors for electric vehicles
IPC: B60L5/16
Filed: 1933-12-01
Abstract: 431,053. Current collectors for electric vehicles. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, and MARDIS, P. L., Lyndhurst, Sedbergh Park, Ilkley, Yorkshire. Dec. 1, 1933, No. 33806. [Class 104 (iii)] In a current collector of the kind comprising two trollies mounted on separate poles pivoting about vertical axes on opposite ends of a centrally pivoted platform 2 on the vehicle, the flexible cables 10 passing down the hollow poles 9 are connected to the lead-in cables 11 by rubbing joints, each comprising an insulator 16 supporting a member 17 provided with a screwed stem 17<a>. A collar 10<a> on the end of the cable 10 is fixed on the stem by a sleeve 18, washer 19 and nut 20. A collar 11<a> on the end of the cable 11 is pressed on the collar 10<a> by a washer 21, and a spring mounted between the washers 19, 21.